CN110944823A

CN110944823A - Method for coating a surface with a profiled coating material and coating material

Info

Publication number: CN110944823A
Application number: CN201880048404.4A
Authority: CN
Inventors: 费利克斯·沙茨
Original assignee: Homag GmbH
Current assignee: Homag GmbH
Priority date: 2017-08-04
Filing date: 2018-08-01
Publication date: 2020-03-31
Also published as: WO2019025486A1; DE102017117714A1; EP3661729A1; US20200307066A1

Abstract

The invention relates to a method and a coating material (10) for coating a surface, in particular a narrow side of a plate-shaped workpiece (W), which preferably consists at least partially of wood, a wood-like material, a substitute wood material, a plastic material or the like, comprising the following steps: supplying a coating material (10), wherein the coating material (10) has a recess (10a), the recess (10a) extending in a longitudinal direction of the coating material (10); and applying the coating material (10) to at least one surface (W1) of a workpiece (W) to be coated, wherein the workpiece (W) has a profile (P) on the at least one surface (W1) to be coated thereof, which profile (P) is at least partially complementary to the recess (10 a).

Description

Method for coating a surface with a profiled coating material and coating material

Technical Field

The invention relates to a method for coating a surface, in particular a narrow side of a plate-shaped workpiece, which preferably consists at least partially of wood, wood-like materials, wood substitute materials, or plastic materials; also relates to a coating material. The method or the coating material is used, for example, in the field of furniture or parts industry.

Background

For example, providing a strip or tape of coating material with adhesive and applying it to the narrow side of a workpiece is known in the art. Generally, a coating material having a rectangular cross section is used for this.

In the edge region of the workpiece thus produced, a suitable end of the coating material is obtained in the form of a radius or chamfer. For example, in the case of a coating material having a thickness of 3mm, a radius of 3mm, or a chamfer having a width of 3mm, is obtained in the edge region. The described edge region contributes significantly to the value of coating the workpiece. In particular, this measure affects the visual appearance, geometry and quality of the coated workpiece.

The region in the center position of the coating material, i.e., the region of the coating material in the thickness direction of the workpiece to be coated, does not play a role. In contrast, since the coating material has a consistent rectangular profile (profile), the cost of the coating material is higher due to the increased amount of material used, and the flexibility of the coating material is lower.

Furthermore, when such narrow surface coatings are produced, the transition between the coating material and the surface of the main side of the workpiece is a problem. A joint (join) is usually created where the adhesion of the coating material to the narrow side fails, so that a narrow space is created between the workpiece and the coating material. Thus, from the joint, the coating tends to peel slowly inward from the coated surface over time.

Disclosure of Invention

The object of the present invention is to provide a method for coating a surface and a coating material for coating in particular a narrow side of a plate-shaped workpiece in an efficient and high-quality manner, in particular with a reduced amount of coating material.

This object is achieved by a method according to claim 1 and a coating material according to claim 11. Preferred embodiments of the invention are described in the dependent claims, wherein the subject matter of the dependent claims relating to the coating material can be used within the scope of the method and vice versa.

One of the central ideas of the present invention is to provide a method of coating a surface, in particular a narrow side of a plate-shaped workpiece, and a coating material therefor, with which the amount of coating material used can be minimized without reducing the aesthetic and tactile value of the coating. This is achieved by the coating material provided with recesses, in particular recesses provided in the central region of the coating material, so that the amount of coating material used can be reduced; and by the surface to be coated of the workpiece to be coated being provided with a profile at least partially complementary to the recess.

With the proposed method and the provided coating material, the amount of material used for producing the coating material can be reduced in a simple and efficient manner, while at least maintaining the aesthetic and tactile value and giving the impression of a wide edge.

According to the invention, a method for coating a surface, in particular a narrow side of a plate-shaped workpiece, preferably at least partially composed of wood, wood-like material, wood substitute material, or plastic material, or the like, comprises the following steps: supplying a coating material, wherein the coating material has a recess extending in a longitudinal direction of the coating material; and applying the coating material to at least one surface of a workpiece to be coated (wherein the recesses face the workpiece), wherein the workpiece has a profile on the at least one surface to be coated that is at least partially complementary to the recesses.

The method described within the scope of the invention can be used in the field of stationary technology and in the field of through-feed technology. In particular, the piece to be machined is plate-shaped and has, for example, one or more edges or corners and therefore a varying surface, as is the case with door notches (door rebates).

In the field of fastening technology, suction grippers or clamping devices are used, for example, to hold workpieces and pressure rollers or shoe presses are used to move the coating unit relative to the held workpiece. However, in the case of the feed-through method, the workpiece is moved relative to the coating unit.

Within the scope of the present invention, the term "recess" is understood to mean that the coating material has a contour, in particular a transverse contour or a cross section, such that the side of the coating material which later comes into contact with the workpiece to be coated has an area with a thickness which is less than the original thickness of the coating material. In other words, the coating material has recesses, or weakened areas, extending along the length of the coating material, in particular in a continuous manner.

With the proposed method, the amount of material used for producing the coating material can be reduced in a simple and efficient manner, while the aesthetic and tactile value of the coating is obtained just as with the known coating methods using conventional coating materials. Due to the provided recesses, the amount of material used for producing the coating material can be reduced by the volume of the recesses. This, in turn, has a beneficial effect on the production cost of the coating material.

According to one embodiment of the invention, the method further comprises: machining processes, by means of which the contour of the workpiece is formed, wherein the machining process is preferably carried out using milling tools, scraping tools and/or abrasive belts (abrasive belts).

In this way, a simple tool can be used to provide a workpiece having a profile that is at least partially complementary to the recess in the coating material.

Furthermore, it is preferred that the contour is formed on at least one surface of the workpiece to be coated, in the case of supplying the workpiece, and/or in the case of applying a coating material to the workpiece and/or the coating material having been formed on the workpiece in a preceding work step.

The process of producing an at least partially complementary workpiece contour can thus be integrated into the coating process of the workpiece, i.e. the contour can be produced, for example, by joint cutting. This provides the advantage that manufacturing tolerances of the recesses in the coating material can be adjusted, for example when milling the profile.

According to a preferred embodiment of the invention, in the case of profiling at least one surface of the workpiece to be coated, a scan, in particular a thickness scan and/or a contour (contour) scan, is performed on the workpiece to be coated. This provides the advantage that any tolerances of the workpiece profile can be taken into account when producing the profile, so that it can be ensured that the profile has the required dimensions to be able to be reliably inserted into the recess in the coating material. Furthermore, it is also possible to vary the position of the profile in the thickness direction of the workpiece to compensate for any tolerances of the workpiece, in particular thickness tolerances. This is to be understood as the following effect: if the thickness of the workpiece is outside a certain tolerance range and therefore the available coating material cannot completely cover the narrow side of the workpiece; the position of the profile is shifted such that at least one edge of the workpiece is clean, i.e. evenly coated. The edge is preferably a visible edge. For example, in the case of a table top, the edge is the edge that turns up later, i.e., in the direct view.

Further, it is preferable that, in the case of producing the coating material, the concave portion extending in the longitudinal direction of the coating material is formed.

It is also preferred that the recesses in the coating material are formed by processing during extrusion of the coating material, in particular during co-extrusion of the support layer with the adhesive layer, and/or after extrusion of the coating material.

In the case of a coating material made of a plastic material, it is particularly advantageous to provide the recess, since in this case the coating material can be extruded in its final form, i.e. with the recess. In this way, there is no need for subsequent production of the recess, and the amount of material used can be directly reduced.

However, the coating material can also be processed after extrusion to produce the recess or profile form.

In a further embodiment of the method according to the invention, in the case of supplying the workpiece to be coated, at least one profile milling tool, preferably two profile milling tools, are used to mill a profile, in particular a trapezoidal projection, which is at least partially complementary to a recess in the coating material, on at least one surface to be coated.

Furthermore, it is advantageous if the adhesive/functional layer is applied at least partially to the surface of the workpiece to be coated and/or to the surface of the coating material provided with recesses, wherein the adhesive/functional layer is preferably applied to the coating material by post-coating ("off-line gluing") in the case of production of the coating material, and/or the adhesive/functional layer is subsequently applied to the profiled coating material and/or the profiled workpiece.

Furthermore, it is advantageous if, using the method, the activation of the adhesive layer of the coating material is carried out during the relative movement between coating material and workpiece, preferably immediately before the actual coating process, wherein the activation is carried out by an energy source, which is selected in particular from a laser, a hot air source or a precipitation gas source (evacuation source), an infrared source, an ultrasonic source, a magnetic field source, a microwave source, a plasma source and/or an LED source. In this connection, it is also possible to use several of the mentioned energy sources in combination with one another.

The laser can be focused particularly quickly on a certain area of the coating material. The use of a laser therefore makes it possible to supply energy particularly rapidly, thus facilitating high operating speeds. For example, hot air sources are relatively inexpensively available and require relatively small amounts of maintenance.

According to a further embodiment of the method according to the invention, the connecting corner (connecting corner) of the workpiece is coated with two coating materials, in particular with longitudinal and transverse coating, wherein the connecting corner has a longitudinal side and a transverse side which are preferably arranged at right angles to one another, the two coating materials have complementary chamfers in the connecting corner of the workpiece, so that the two coating materials adjoin one another without raising the profile, and the depth of the recess in the two coating materials is preferably selected such that the coating materials completely surround the workpiece at the connecting corner of the workpiece. This means that the usually same recess depth in both coating materials is chosen such that it is smaller than the miter radius of both coating materials.

In this way, it is ensured that both coating materials completely surround the corners of the workpiece. Thus, connecting corners can be created that give a high quality impression.

Furthermore, the invention relates to a coating material, in particular a narrow-surface coating material or an edge material, for coating a surface of a workpiece, in particular for coating a varying surface of a workpiece, which preferably consists at least partially of wood, a wood-like material, a substitute wood material, or a plastic material or the like, which coating material comprises: a support layer having a first surface, the support layer being designed to be applied to at least one surface of a workpiece to be coated; and a recess extending in a longitudinal direction of the coating material, wherein the recess is provided in the first surface.

In the sense of the present invention, a variable surface means, for example, a surface consisting of different workpiece sides, in particular surfaces which are angled and/or merge into one another by one or more radii. Examples of varying surfaces include corners or edges, in particular of plate-like workpieces. In particular, the narrow sides may comprise corners and/or edges. These surfaces are present, for example, in the region of the door opening.

With the provided coating material, the amount of material used in the production of the coating material can be reduced in a simple and effective manner, while at the same time the aesthetic and tactile value of the coating can be obtained, as is the case with known coating materials. Furthermore, due to the provision of the recesses and the associated weakening of the transverse profile of the coating material, the flexibility or elasticity of the coating material may be increased, which makes it possible to coat workpieces having a smaller radius. In other words, a thicker coating material can be applied at an equal radius on the workpiece to be coated, as compared to conventional coating materials, which helps to improve the appearance and quality of the final product.

Furthermore, it is preferred that the recesses are formed in a trapezoidal, U, V or W shape and/or by a combination of chamfers, straight lines and arcs when the coating material is viewed in cross section, wherein the recesses preferably have the form of an equilateral trapezoid with a longer base (base side) on the outer side of the coating material.

It is also advantageous if, in the case of recesses in the form of isosceles-isosceles trapezoids, which are the longer base of the isosceles trapezoids, the recesses are positioned and formed such that the longest dimension of the recess contacts, or is at a specific distance from, both longitudinal side walls of the coating material.

Furthermore, it is preferred that the depth of the recess is selected such that it is smaller than the miter radius or miter angle at least one end of the coating material.

In this way, it is ensured that one corner of the workpiece is completely surrounded by the coating material.

According to yet another embodiment of the invention, the coating material comprises an activatable or reactivatable adhesive layer.

It is also preferred that the coating material is an extruded coating material, in particular a coextruded coating material, wherein in particular the support layer and the adhesive layer are coextruded, or that the support layer of the coating material is provided with an adhesive layer after its production, wherein the adhesive layer is preferably applied using a nozzle or a profiled paste roller.

It is also advantageous if the support layer of the coating material is formed at least partially from polyvinyl chloride (PVC), polystyrene, in particular from acrylonitrile-butadiene-styrene copolymer (ABS), polypropylene (PP), Polyethylene (PE), polycarbonate and/or polymethyl methacrylate (PMMA), such as High-pressure Laminate (HPL), continuous Laminate (CPL), melamine paper and/or such as plywood (veneer).

According to a further embodiment of the invention, the coating material has a thickness between 0.5mm and 4mm, preferably between 0.7mm and 4mm, more preferably between 1.5mm and 4mm, wherein in particular the adhesive layer has a thickness of 0.1mm to 0.3mm and the recesses preferably have a depth of 0.1mm to 3mm, preferably 0.5mm to 3 mm.

Thus, due to the recesses, it is also possible to use a coating material having a relatively large thickness, since the amount of material used can be kept to a minimum despite the large thickness of the coating material, and the flexibility of the coating material in relation to the material thickness can be improved compared to known coating materials.

Furthermore, it is preferred that the depth of the recesses in the coating material is 60% greater than the thickness of the coating material, preferably 70% greater than the thickness of the coating material.

It is advantageous if the width of the recesses, viewed in the width direction of the coating material, is 70% larger than the width of the coating material, preferably 80% larger than the width of the coating material, more preferably 90% larger than the width of the coating material, wherein sufficient coating material preferably remains at both edges of the coating material to be able to provide an end radius or end chamfer on the continuous surface of the work piece.

In this way, the amount of material saved due to the recesses can be maximized, and the flexibility of the coating material can be adjusted in an optimal manner.

Furthermore, it is preferred that the adhesive layer of the coating material has a color pigment, in particular in the color of the support layer and/or the coating of the workpiece to be coated.

In this way, the color of the adhesive layer can be adjusted to the color of the support layer. Thus, the adhesive layer is not perceptible, or is barely perceptible, without reducing the thickness of the adhesive layer once the coating material is applied to the workpiece.

Drawings

Figure 1 schematically shows a workpiece that has been coated according to a coating method according to a first embodiment of the invention,

figure 2 schematically shows a workpiece that has been coated according to a coating method according to a second embodiment of the invention,

fig. 3 schematically shows a workpiece that has been coated according to the coating method shown in fig. 2, wherein the coating material has rounded edges,

figure 4 shows an enlarged view of the coated workpiece of figure 2,

figure 5 shows a coating material for use in the coating method shown in figure 2,

FIG. 6 schematically shows a connecting corner of a workpiece that has been coated according to the coating method shown in FIG. 2, an

Fig. 7 schematically shows a spatial representation of a connecting corner of a workpiece that has been coated according to the coating method shown in fig. 3.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail based on the accompanying drawings. Further modifications referred to in certain features of the context may each be separately combined to form further embodiments.

Fig. 1 schematically shows a workpiece W that has been coated according to a coating method according to a first embodiment of the invention. In particular, fig. 1 shows a cross-sectional view through the workpiece W and the coating material 10 orthogonally with respect to the longitudinal extension of the coating material 10. As can be seen from fig. 1, the coating material 10 has a recess 10a on the side facing the workpiece W. This will be discussed in detail later with respect to fig. 4. It can also be derived from fig. 1 that the workpiece W, which has been coated with the coating material 10, has a profile P which corresponds to the contour of the recesses 10a in the coating material, i.e. the profile P of the workpiece W is at least partially complementary to the recesses 10a in the coating material 10. As also shown in fig. 1, the recesses 10a in the coating material extend as far as the two covering sides (upper and lower sides) W2 and W3 of the workpiece W. As a result of the fact that the coating material (edge material) is always higher than the workpiece W, the recesses 10a in the coating material temporarily protrude beyond the upper and lower sides W2, W3 of the workpiece W. The overhang (overlap) can be used to compensate for any variation in the thickness of the workpiece. The remaining projecting portion is preferably removed by a finishing process (finishing process) in a form-fitting manner (form-fitting machine) with respect to the workpiece W. Thus, fig. 1 shows the coated workpiece W after finishing. Since the recesses 10a in the coating material extend as far as the two covering sides W2, W3 of the workpiece W, it is only necessary to provide the workpiece W with two chamfers when forming the profile P of the workpiece W. As can be gathered from fig. 1, the applied coating material 10 gives the impression that its edges are much wider than the actual width of the majority of the coating material 10. Thus, the coating material 10 provided can deliver a high-quality conventional impression, but the amount of material used can be greatly reduced.

Fig. 2 schematically shows a workpiece which has been coated according to a coating method according to a second embodiment of the invention, wherein, in contrast to the embodiment shown in fig. 1, the recesses 10a in the coating material 10 do not extend as far as the two coated sides W2, W3 of the workpiece W. This means that the recesses 10a do not extend to the outer longitudinal side of the coating material 10. Therefore, the design of the profile P of the workpiece W is more complicated. However, this configuration of the recesses 10a in the coating material 10 offers the advantage that the coating material longitudinal edges arranged outwards after application of the coating material are thicker, i.e. the longitudinal edges of these coating materials contain more material, so that they are stronger in the face of external influences or damage.

As shown in fig. 3, this configuration is particularly advantageous if the longitudinal edges of the coating material 10, which are arranged outwards once applied to the workpiece W, are provided with a radius R or with a chamfer. The reason for this is that for the radius R or chamfer to be provided, the edge region of the coating material 10 must have a sufficient thickness to avoid the risk of the coating material 10 being too unstable.

In this regard, the coating material 10 may already have a radius R or chamfer on the decorative side, i.e. on the opposite side of the coating side, before the coating material 10 is applied to the workpiece, which has the advantage that the required finishing can be performed using only a doctor blade.

As shown in fig. 3, the radius R may taper tangentially to the workpiece thickness. In other words, the transition of the workpiece W leads tangentially to the radius R of the coating material 10. For example, if the coating material 10 on the upper side is 3mm wide, it is advantageous if the milled coating material 10 also has a radius R of, for example, 3 mm. This achieves the advantage that the coating material 10, which is thin in itself, gives the impression that the edge is thicker and therefore the radius R is larger in the edge region.

It can also be gathered from fig. 3 that the profile P of the workpiece W extends perpendicularly at its edges to the covered sides W2, W3 of the workpiece W, which leads to the advantage that the width of the resulting coating remains constant in the case of a varying thickness of the workpiece W. However, in the case of the embodiment shown in fig. 1, when the thickness of the work piece is changed, the width of the coating is also changed, because the coating material 10 must be removed more or less according to the thickness of the work piece W, and thus the width of the coating material 10 is changed by the obliquely extending recess 10 a.

Furthermore, the embodiments provided in fig. 2 and 3 provide the advantage that the glued or invisible seam is narrower than in the embodiment shown in fig. 1, due to the vertical joint surface between the coating material 10 and the workpiece W. The reason for this is that due to the inclined plane, the width of the glued seam or the invisible seam increases, depending on the angle of the inclined plane. With a 45 ° variation, a 0.2mm seam increases 1/sin45 ° -1.414 times the square root of 2.

FIG. 4 shows an enlarged view of the coated workpiece of FIG. 2. The coating material 10 is shown on the right hand side of fig. 4. As is clear from fig. 4, the concave portion 10a in the coating material 10 of the second embodiment is formed so that it does not extend as far as the longitudinal side of the coating material 10. This means that the predetermined distance a is maintained between both longitudinal sides of the coating material 10 and the recess 10 a. Furthermore, the recess 10a has an isosceles trapezoidal form tapering inwardly, i.e., into the coating material 10. Thus, the recess has a long base G provided on the surface O1 of the coating material 10, which surface O1 later comes into contact with the tool W, in particular with the surface or work side W1. The depth T of the coating material 10 is selected such that it is less than the thickness D of the coating material. As mentioned above, the shape of the recess 10a and the shape of the profile P complementary thereto can be freely chosen, in the case of the combination of straight, chamfered and curved lines that can be envisaged. In the case of both shapes, it is ensured that the profile P of the work W can be inserted into the recess 10a in the coating material 10 when coating the work W, and it is preferable to ensure that the contact surface between the recess 10a and the profile P is maximized.

As can also be seen from fig. 4, the workpiece W has a contour P on the surface or workpiece side W1, which is at least partially complementary to the recess 10a in the coating material 10. Here, at least partially complementary is to be understood to mean that the profile P is formed such that it can be inserted unambiguously into the recess 10a, i.e. its dimensions are smaller than those of the recess 10 a. On the other hand, however, the profile P should not be so small that a large space is formed between the profile P and the recess 10 a. In the second embodiment shown, the profile P has the form of a trapezoidal projection 13. As can also be taken from fig. 4, the joining area (contact surface) between the coating material 10 and the work W is large due to the recesses 10 a/projections 13 in the form of trapezoids, which increases the joining strength and reduces the risk of peeling of the coating material 10 (on the edges) from the work W.

Fig. 5 shows only the coating material 10, wherein the coating material 10 consists of a support layer 11 and an adhesive layer 10. As also shown in fig. 5, the adhesive layer 10 is provided on the side surface of the coating material 10, and on the side surface of the coating material 10, the concave portion 10a is formed in the coating material 10. Fig. 5 also shows the fact that the width B1 of the recess 10a is smaller than the width B2 of the coating material 10, the width B1 of the recess 10a corresponding to the maximum width of the recess 10 a.

Fig. 6 schematically shows a connecting corner of a work piece that has been coated according to the coating method shown in fig. 2. As can be seen in fig. 6, the two coating materials 10 meet in the shown connecting corner, wherein the two coating materials 10 are a machine direction coating 102 and a cross direction coating 101. The connecting corner includes a longitudinal side (surface) W1' and a transverse side W1 ″ of the work W, which are arranged at right angles to each other.

The corners can be machined using methods common today. Only additional profiling (additional profiling) of the narrow side is necessary. Firstly, arranging a chamfer on the longitudinal side of a workpiece; the longitudinal coating 102 is then applied to the longitudinal side W1', after which the protruding portions of the longitudinal coating 102 are trimmed. In the next step, a finishing process is performed on the longitudinal side (profile + surface). Subsequently, the lateral side W1 "(including the longitudinal side that has been glued) is provided with a chamfer and the lateral coating 101 is applied to the lateral side W1". After that, the protruding portion of the transverse coating 101 is cut back and set at the radius R_GForm milling (form milling) is performed. Finally, a finishing process is performed on the lateral sides (profile + surface).

In this respect, the two recesses 10a in the two

coating materials

101, 102 have the same depth T, which is selected such that the

coating materials

101, 102 completely surround the workpiece W, in particular the connecting corners of the workpiece W. In other words, the depth T of the two recesses 10a is selected such that the depth T is larger than the miter radius R of the two

coating materials

101, 102_GIs small.

Fig. 7 schematically shows a spatial representation of a connecting corner of a workpiece which has been coated according to the coating method shown in fig. 3, wherein, as described above, only the longitudinal side W1 'of the workpiece W has now been provided with longitudinal coating 102, the longitudinal coating 102 has been cut down, and on the transverse side W1' the profile P has been milled. As can be seen from fig. 7, after the lateral side W1' is modified, a support surface a or a contact surface is formed on the longitudinal coating 102, and this support surface a or contact surface is smaller than in the case of the conventional coating due to the modification, improving the coating strength in the corner region.

Claims

1. A method for coating a surface, in particular a narrow side of a plate-shaped workpiece (W), preferably at least partially consisting of wood, a wood-like material, a substitute wood material, or a plastic material, or the like, comprising the steps of:

supplying a coating material (10), wherein the coating material (10) has a recess (10a), the recess (10a) extending in a longitudinal direction of the coating material (10); and

applying the coating material (10) to at least one surface (W1) of the workpiece (W) to be coated,

wherein the workpiece (W) has a profile (P) on the surface (W1) thereof, which profile (P) is at least partially complementary to the recess (10a) in the coating material (10).

2. The method of claim 1, further comprising:

a machining process by means of which the profile (P) of the workpiece (W) is formed, wherein the machining process is preferably carried out using a milling tool, a scraping tool, and/or a grinding belt.

3. Method according to claim 1 or 2, wherein the profile (P) is formed on the at least one surface (W1) to be coated of the workpiece (W) in the case of a supply of the workpiece (W) and/or in the case of an application of the coating material (10) to the workpiece (W) and/or in the case of a coating material (10) already formed on the workpiece (W) in a preceding work step.

4. Method according to any one of claims 1 to 3, wherein, with the profile (P) formed on the at least one surface (W1) of the workpiece (W) to be coated, a scan, in particular a thickness scan and/or a contour scan, is performed on the workpiece (W) to be coated.

5. The method according to any one of claims 1 to 4, wherein the recesses (10a) extending in the longitudinal direction of the coating material (10) are formed in the case of producing the coating material (10).

6. Method according to any one of claims 1 to 5, wherein the recesses (10a) in the coating material (10) are formed by processing during extrusion of the coating material (10), in particular during co-extrusion of a support layer (11) with an adhesive layer (12), and/or after extrusion of the coating material.

7. Method according to any one of claims 1 to 6, wherein, in the case of supplying the workpiece (W) to be coated, trapezoidal projections (13) are milled on the at least one surface (W1) to be coated using at least one profile milling tool, preferably two profile milling tools, the projections (13) being at least partially complementary to the recesses (10a) in the coating material (10).

8. Method according to any one of claims 1 to 7, wherein an adhesive/functional layer is applied at least partially to the surface (W1) to be coated of the workpiece (W) and/or to the surface of the coating material (10) provided with the recesses (10a), wherein the adhesive/functional layer is applied to the coating material (10), preferably by post-coating, in the case of production of the coating material (10), and/or the adhesive/functional layer is subsequently applied to the profiled coating material (10) and/or the profiled workpiece (W).

9. The method according to any one of claims 1 to 8, wherein the activation of the adhesive layer (12) of the coating material (10) is performed during a relative movement between the coating material (10) and the workpiece (W), wherein the activation is performed by an energy source, in particular selected from a laser, a hot air source, a source of evolved gas, an infrared source, an ultrasonic source, a magnetic field source, a microwave source, a plasma source and/or a LED source.

10. Method according to any one of claims 1 to 9, wherein the connecting corners of the work piece (W) are coated with two coating materials (10), in particular with a longitudinal coating (102) and a transverse coating (101), wherein

The connecting corner having as its surface a longitudinal side (W1') and a transverse side (W1 "), the longitudinal side (W1') and the transverse side (W1") being arranged at right angles to one another,

the two coating materials (10) have complementary chamfers in the connecting corners of the work pieces, so that the two coating materials (10) abut each other without raising the contour, and

the depth (T) of the recesses (10a) in both of the coating materials (10) is preferably selected such that the coating materials (10) completely surround the work piece at the connecting corners of the work piece.

11. A coating material (10), in particular a narrow-surface coating material, for coating a surface of a workpiece (W), which preferably consists at least partially of wood, a wood-like material, a substitute wood material, or a plastic material, etc., which coating material (10) comprises:

a support layer (11) having a first surface (O1), the support layer (11) being designed to be applied to at least one surface (W1) of the workpiece (W) to be coated, and

a recess (10a) extending in a longitudinal direction of the coating material (10), wherein the recess (10a) is provided in the first surface (O1).

12. The coating material (10) according to claim 11, wherein the recesses (10a) are formed as trapezoids, U-shapes, V-shapes or W-shapes, and/or by a combination of chamfers, straight lines and arcs, when the coating material (10) is viewed in cross-section, wherein the recesses (10a) preferably have the form of an isosceles trapezoid with a longer base (G) on the outer side of the coating material.

13. The coating material (10) according to claim 11 or 12, wherein the recess (10a) is positioned and formed such that the longest dimension of the recess (10a) contacts both longitudinal side walls (10b) of the coating material (10) or such that the longest dimension of the recess (10a) is a certain distance (a) from the two longitudinal side walls (10 b).

14. The coating material (10) according to any one of claims 11 to 13, wherein the depth (T) of the recess (10a) is selected such that the depth (T) is smaller than a miter radius (R) at least one end of the coating material (10)_G) Or mitered angle.

15. The coating material (10) according to any one of claims 11 to 14, further comprising an activatable or reactivatable adhesive layer (12).

16. The coating material (10) according to any one of claims 11 to 15, the coating material (10) being a co-extruded coating material, wherein, in particular, the support layer (11) and the adhesive layer (12) are co-extruded, or the support layer (11) of the coating material (10) is provided with the adhesive layer after its production, wherein the adhesive layer is preferably applied using a nozzle or a profiled paste roller.

17. The coating material (10) according to any one of claims 11 to 16, wherein the support layer (11) of the coating material (10) is at least partially formed of PVC, polystyrene, in particular ABS, PP, PE, polycarbonate and/or Polymethylmethacrylate (PMMA), such as high pressure laminate, continuous laminate, melamine paper and/or such as plywood.

18. The coating material (10) according to any one of claims 11 to 17, wherein the coating material (10) has a thickness (D) between 0.5mm and 4mm, preferably between 0.7mm and 4mm, more preferably between 1.5mm and 4mm, wherein the adhesive layer (12) has in particular a thickness of 0.1mm to 0.3mm and the recesses (10a) preferably have a depth (T) of 0.1mm to 3mm, preferably 0.5mm to 3 mm.

19. The coating material (10) according to any one of claims 11 to 18, wherein the binder layer (12) of the coating material (10) has a color pigment.